156 lines
4.4 KiB
C++
156 lines
4.4 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* Steve Reinhardt
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*/
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#include <algorithm>
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#include <map>
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#include <string>
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#include <utility>
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#include "base/trace.hh"
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#include "config/full_system.hh"
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#include "cpu/base.hh"
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#include "cpu/thread_context.hh"
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#include "cpu/pc_event.hh"
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#include "sim/debug.hh"
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#include "sim/core.hh"
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#include "sim/system.hh"
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using namespace std;
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PCEventQueue::PCEventQueue()
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{}
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PCEventQueue::~PCEventQueue()
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{}
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bool
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PCEventQueue::remove(PCEvent *event)
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{
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int removed = 0;
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range_t range = equal_range(event);
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for (iterator i = range.first; i != range.second; ++i) {
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if (*i == event) {
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DPRINTF(PCEvent, "PC based event removed at %#x: %s\n",
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event->pc(), event->descr());
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pc_map.erase(i);
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++removed;
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}
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}
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return removed > 0;
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}
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bool
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PCEventQueue::schedule(PCEvent *event)
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{
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pc_map.push_back(event);
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sort(pc_map.begin(), pc_map.end(), MapCompare());
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DPRINTF(PCEvent, "PC based event scheduled for %#x: %s\n",
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event->pc(), event->descr());
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return true;
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}
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bool
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PCEventQueue::doService(ThreadContext *tc)
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{
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Addr pc = tc->readPC() & ~0x3;
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int serviced = 0;
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range_t range = equal_range(pc);
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for (iterator i = range.first; i != range.second; ++i) {
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// Make sure that the pc wasn't changed as the side effect of
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// another event. This for example, prevents two invocations
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// of the SkipFuncEvent. Maybe we should have separate PC
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// event queues for each processor?
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if (pc != (tc->readPC() & ~0x3))
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continue;
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DPRINTF(PCEvent, "PC based event serviced at %#x: %s\n",
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(*i)->pc(), (*i)->descr());
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(*i)->process(tc);
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++serviced;
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}
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return serviced > 0;
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}
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void
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PCEventQueue::dump() const
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{
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const_iterator i = pc_map.begin();
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const_iterator e = pc_map.end();
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for (; i != e; ++i)
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cprintf("%d: event at %#x: %s\n", curTick, (*i)->pc(),
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(*i)->descr());
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}
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PCEventQueue::range_t
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PCEventQueue::equal_range(Addr pc)
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{
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return std::equal_range(pc_map.begin(), pc_map.end(), pc, MapCompare());
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}
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BreakPCEvent::BreakPCEvent(PCEventQueue *q, const std::string &desc, Addr addr,
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bool del)
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: PCEvent(q, desc, addr), remove(del)
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{
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}
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void
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BreakPCEvent::process(ThreadContext *tc)
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{
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StringWrap name(tc->getCpuPtr()->name() + ".break_event");
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DPRINTFN("break event %s triggered\n", descr());
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debug_break();
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if (remove)
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delete this;
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}
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#if FULL_SYSTEM
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void
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sched_break_pc_sys(System *sys, Addr addr)
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{
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new BreakPCEvent(&sys->pcEventQueue, "debug break", addr, true);
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}
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void
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sched_break_pc(Addr addr)
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{
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for (vector<System *>::iterator sysi = System::systemList.begin();
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sysi != System::systemList.end(); ++sysi) {
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sched_break_pc_sys(*sysi, addr);
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}
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}
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#endif
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